Musical instrument stand with an angle adjustment function

Abstract

A musical instrument stand includes a clamping unit and a support unit connected with the clamping unit. The support unit includes a base frame and a connecting module. The connecting module includes a connecting portion and a spherical universal connector. The clamping unit includes a clamp assembly, a spherical mounting seat, and a positioning nut. The mounting seat has an external thread onto which the positioning nut is screwed onto and has a periphery provided with at least two elongate slits. Thus, the mounting seat of the clamping unit is pivotally connected with the universal connector of the support unit so that the support unit can be pivoted relative to the clamping unit so as to adjust the angle of the support unit freely and variably.

The invention claimed is: 
     
       1. A musical instrument stand, comprising:
 a clamping unit; and 
 a support unit connected with the clamping unit; 
 wherein the support unit includes a telescopically arranged base frame, and a connecting module mounted on a face of the base frame; 
 the connecting module of the support unit is connected with the clamping unit; 
 the connecting module of the support unit includes a connecting portion having a first end connected with the base frame, and a spherical universal connector integrally formed on a second end of the connecting portion; 
 the clamping unit includes a clamp assembly, a spherical mounting seat connected with the clamp assembly and pivotally connected with the universal connector of the connecting module, and a positioning nut screwed onto the mounting seat; 
 the mounting seat has a first end connected with the clamp assembly and a second end provided with an external thread onto which the positioning nut is screwed onto; 
 the second end of the mounting seat has a periphery provided with at least two elongate slits; 
 when the support unit and the clamping unit are disposed at an unlocked state, the base frame of the support unit is detached from the clamp assembly of the clamping unit, and the positioning nut of the clamping unit is mounted on the connecting portion of the connecting module; 
 when the support unit and the clamping unit are disposed at a locked state, the mounting seat of the clamping unit is mounted on the universal connector of the support unit, and the positioning nut of the clamping unit is screwed onto the external thread of the mounting seat to compress the slits of the mounting seat and to contract the mounting seat so that the mounting seat compresses the universal connector closely. 
 
     
     
       2. The musical instrument stand of  claim 1 , wherein
 the universal connector of the connecting module has a surface provided with a limit groove; 
 the positioning nut has an inner wall provided with a limit piece limited in the limit groove of the universal connector. 
 
     
     
       3. The musical instrument stand of  claim 1 , wherein
 the connecting module of the support unit further includes two opposite antiskid blocks mounted on the universal connector; 
 the universal connector of the connecting module has two opposite sides each provided with a mounting recess for mounting each of the two antiskid blocks. 
 
     
     
       4. The musical instrument stand of  claim 1 , wherein
 the clamp assembly includes a lower clamp connected with the mounting seat, and an upper clamp connected with and movable relative to the lower clamp; 
 the upper clamp has a surface provided with a receiving space; 
 the clamping unit further includes a clamping space defined between the lower clamp and the upper clamp, an upper pressing block mounted on the receiving space of the upper clamp, a threaded rod having a lower end secured on the lower clamp and an upper end extending through the upper clamp and the upper pressing block, and a locking nut screwed onto the upper end of the threaded rod and pressing the upper pressing block. 
 
     
     
       5. The musical instrument stand of  claim 4 , wherein
 the clamp assembly further includes a bushing removably mounted in the lower clamp and disposed between the lower clamp and the upper clamp; 
 the clamping space of the clamping unit is defined between the bushing and the upper clamp. 
 
     
     
       6. The musical instrument stand of  claim 5 , wherein the clamp assembly further includes two antiskid members mounted in the upper clamp and the bushing respectively. 
     
     
       7. The musical instrument stand of  claim 6 , wherein each of the two antiskid members is a protruding bar. 
     
     
       8. The musical instrument stand of  claim 1 , wherein
 the clamp assembly includes a lower clamp connected with the mounting seat, and an upper clamp connected with and movable relative to the lower clamp; 
 the upper clamp has a surface provided with a receiving space; 
 the lower clamp of the clamp assembly has a side provided with a mounting space; 
 the clamping unit further includes a clamping space defined between the lower clamp and the upper clamp, an upper pressing block mounted on the receiving space of the upper clamp, a lower pressing block pivotally mounted on the mounting space of the lower clamp, a threaded rod having a lower end secured on the lower pressing block and an upper end extending through the lower clamp, the upper clamp and the upper pressing block, and a locking nut screwed onto the upper end of the threaded rod and pressing the upper pressing block. 
 
     
     
       9. The musical instrument stand of  claim 8 , wherein
 the receiving space of the upper clamp is extended through and connected to a side rim of the upper clamp; and 
 the mounting space of the lower clamp is extended through and connected to a side rim of the lower clamp.